Thermal Care NQA13 - Default Chapter; Table of Contents

Figure 31 – Water Cooled Condenser Pressure Drop Curve (20-Ton to 40-Ton) ............................................................ 22
Installation – Remote Air-Cooled Condenser ............................................................................................................23
Location .............................................................................................................................................................................................................. 23
Mounted Legs and Lifting (5 - 10 ton Units) ....................................................................................................................................... 23
Mounted Legs and Lifting (15 – 40 ton Units) .................................................................................................................................... 24
Interconnecting Refrigerant Piping ......................................................................................................................................................... 24
Refrigeration Piping Design ....................................................................................................................................................................... 24
Figure 32 – Condenser Located with No Elevation Difference ................................................................................................ 25
Figure 33 – Condenser Located above Chiller Unit ..................................................................................................................... 25
Figure 34 - Condenser Located Below Chiller Unit ...................................................................................................................... 26
Determining Equivalent Line Length ...................................................................................................................................................... 26
Table 5 – Equivalent Lengths of Fittings .......................................................................................................................................... 27
Liquid Line Sizing ............................................................................................................................................................................................ 27
Table 6 – Liquid Line Sizes for R410A ................................................................................................................................................ 28
Discharge (Hot Gas) Line Sizing ................................................................................................................................................................ 30
Figure 35 – Vertical Riser Traps ............................................................................................................................................................ 30
Figure 36 - Double Discharge Riser ................................................................................................................................................... 31
Table 7 - Horizontal or Downflow Discharge Line Sizes for R410A (inches OD).............................................................. 31
Table 8 - Upflow Discharge Line Sizes for R410A (inches OD) ................................................................................................ 31
Calculating System Refrigerant and Oil Charge ................................................................................................................................. 32
Table 9 – Combined Chiller and Remote Condenser Summer Refrigerant Charge ........................................................ 32
Table 10 - Field Piping R-410A Refrigerant Charge per 100 Feet of Run (Lbs.) ............................................................... 32
Oil Charge Determination ........................................................................................................................................................................... 32
Setting Condenser Fan Controls............................................................................................................................................................... 32
Table 11 - Condenser Fan Pressure Settings (psig) ..................................................................................................................... 32
Installation - Electrical ..................................................................................................................................................33
Table 12 – Air Cooled Chiller Electrical Data (60 Hz) ................................................................................................................... 34
Table 13 – Water Cooled & Remote Air Cooled Condenser Chiller Electrical Data (60 Hz) ........................................ 38
Table 14 – Remote Air Cooled Condenser Electrical Data (60 Hz) ........................................................................................ 42
Standard Controller Operation ....................................................................................................................................43
Start Button ....................................................................................................................................................................................................... 43
Stop Button ....................................................................................................................................................................................................... 43
Alarm Silence / Alarm Reset Button ........................................................................................................................................................ 43
Compressor Running Hours Button ........................................................................................................................................................ 43
Pump Running Hours Button .................................................................................................................................................................... 44
Pump Test Button ........................................................................................................................................................................................... 44
Display/Program Button .............................................................................................................................................................................. 44
Up Button .......................................................................................................................................................................................................... 44
Down Button .................................................................................................................................................................................................... 44
Control Power On LED .................................................................................................................................................................................. 44
Autostart Signal LED...................................................................................................................................................................................... 44
Pump LED .......................................................................................................................................................................................................... 45
Hot Gas Bypass LED ....................................................................................................................................................................................... 45
Compressor #1 LED ....................................................................................................................................................................................... 45
Compressor #2 LED ....................................................................................................................................................................................... 45
Temperature Limit LED ................................................................................................................................................................................. 45
Electrical Phase Error LED ............................................................................................................................................................................ 45
Low Flow LED ................................................................................................................................................................................................... 45
Freezestat LED ................................................................................................................................................................................................. 46
Low Reservoir Level LED .............................................................................................................................................................................. 46